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St. John the Baptist Parish, LA: population growth, jobs and income

St. John the Baptist Parish lost 90 residents between 2024 and 2025 (−0.2%).

St. John the Baptist Parish had an estimated 39,875 residents in 2025, down 5.9% (2,487 fewer people) since 2020. That is slower than Louisiana as a whole (−0.7%), and the 56th fastest growth of 64 counties in Louisiana.

Data as of 2025 · updated

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In the St. John the Baptist Parish report

One-time $99 PDF: everything on this page for St. John the Baptist Parish, ranked against Louisiana and the U.S., plus these figures that are not on the free page:

  • Median gross rent$1,334/mo2020–24
  • Vacant homes, incl. seasonal and second homes15.0%2020–24
  • New homes permitted, last 12 months322025-10/2026-09
  • Rent growth, 5 yearsIn the report
  • Permits in 5+ unit buildingsIn the report
  • IRS income moving in (net AGI)In the report
  • Neighbouring-county comparison tableIn the report

What's inside: 5 pages

  1. 1 Summary, headline numbers and ranks (free preview)
  2. 2 Ranks and the neighbouring-county table
  3. 3 Migration, with IRS mover and income flows
  4. 4 Rent, vacant homes, permits and employers
  5. 5 Every source and the methods
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Headline numbers

What the numbers say

Net domestic migration was negative in 2025: 110 more people moved out to other U.S. counties than moved in.

Private employers had 15,023 paid employees in mid-March 2023, −11.1% since 2018 (County Business Patterns).

Unemployment averaged 5.2% in 2025, 0.1 points lower than in 2019 (before the pandemic).

Builders were authorized to start 60 new homes in 2025, or 1.5 per 1,000 residents.

Median household income was $66,630 in the 2020–24 American Community Survey, +20.2% since 2016–20.

Across the 3,107 U.S. counties with a comparable estimate, its population growth ranks 2,985th.

Part of the New Orleans-Metairie, LA metro area.

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St. John the Baptist Parish population by year

Resident population, July 1 estimate (Census Bureau)
YearPopulationChange
202539,875−90
202439,965+147
202339,818−210
202240,028−2,091
202142,119−243
202042,362–

Census Bureau population estimates, July 1 of each year.

What drove the change in St. John the Baptist Parish

St. John the Baptist Parish lost 2,487 people since 2020; the biggest drag was domestic migration (−3,166).

Components of population change, people (Census Bureau)
Component20252020–25Share
Natural changebirths minus deaths−30+113
International migrationfrom and to other countries+46+417
Domestic migrationfrom and to other U.S. counties−110−3,166
Census adjustmentbalancing residual+4+149
Total change−90−2,487

Census Bureau population estimates, components of change, each year July 1 to June 30. The components add up to the change in the estimate; the Census adjustment is the small balancing figure the Bureau publishes.

How it ranks

MeasureIn LouisianaAmong U.S. counties
Population growth56th of 642,985th of 3,107
Net domestic migration per 1,000 residents27th of 642,315th of 3,108
Private-sector job growth59th of 642,855th of 3,092
Median household income14th of 641,440th of 3,107
Lowest unemployment rate51st of 642,616th of 3,108
New homes permitted per 1,000 residents37th of 641,797th of 3,005

1st = highest (lowest for unemployment). Counties are ranked only against others with a figure for the same period.

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The County Growth and Demographics Report for St. John the Baptist Parish, LA as a PDF, from federal data: population and migration, housing and rents, permits, private employers and jobs, unemployment, ranks in the state and the country, and neighbouring counties, with a source next to every number. Pay once, no subscription.

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Neighbouring counties

Over 2020–25, St. John the Baptist Parish's population change (−5.9%) was behind 7 of its 8 neighbouring counties and level with St. James Parish.

4 of its 8 neighbouring counties had a higher median household income than St. John the Baptist Parish's $66,630 (2020–24).

St. John the Baptist Parish, LA and its 8 neighbouring counties: public federal figures
CountyPopulation2025Population change2020–25Net domestic migration per 1,000 residents2025Homes permitted per 1,000 residents2025Median household income2020–24
St. John the Baptist Parish, LA This county39,875−5.9%−2.81.5$66,630
St. Charles Parish, LA50,586−3.7%−3.82.3$80,897
St. James Parish, LA18,938−5.9%−7.83.4$65,531
Ascension Parish, LA135,105+6.4%0.54.7$91,549
Livingston Parish, LA155,036+8.5%7.84.2$80,122
Jefferson Parish, LA431,398−1.9%−12.91.0$65,252
Tangipahoa Parish, LA141,346+5.8%6.98.2$56,760
Lafourche Parish, LA95,505−2.0%−1.73.6$63,135
St. Tammany Parish, LA279,108+5.3%2.63.9$81,202

Census Bureau population estimates and building permits, American Community Survey 5-year income. Rates per 1,000 residents. – means no figure, or a base too small for a change or rate (it would swing on a few people). A figure from another period shows its year and is left out of the comparison.

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Questions

Is St. John the Baptist Parish growing?

No. Its population fell 5.9% between 2020 and 2025, about 2,487 fewer people (Census Bureau population estimates). Louisiana as a whole changed −0.7% over the same years. That ranks 56th of 64 counties in Louisiana for population growth.

How many people moved to St. John the Baptist Parish?

On net, none in 2025: about 110 more people moved out to other U.S. counties than moved in (Census Bureau net domestic migration estimate).

What is the unemployment rate in St. John the Baptist Parish?

It averaged 5.2% in 2025 (BLS Local Area Unemployment Statistics, annual average).

What is the population of St. John the Baptist Parish?

About 39,875 people, according to the U.S. Census Bureau's population estimate for July 1, 2025.

How many jobs are in St. John the Baptist Parish?

Private employers there had 15,023 paid employees in mid-March 2023, −11.1% since 2018 (Census Bureau County Business Patterns; government jobs and the self-employed are not counted).

What Beacon CRE covers in Louisiana

Map, parcel and listing layers cover North and South Carolina only for now. This page and the other Louisiana county pages carry the public federal growth figures.

St. John the Baptist Parish data alerts

Email me when St. John the Baptist Parish gets new Census numbers: population, building permits, jobs and income. About 4 emails a year, one click to stop.

We use your address only to email you when new data for St. John the Baptist Parish is out: what changed, with a link to that county's report. No newsletter, no other sales emails. Delete it any time with the link in every email. We'll email you a link to confirm first; nothing starts until you click it. Privacy notice.

Sources and method

Each number shows its own period. Changes compare the latest period with five years earlier (or the earliest period available). Beacon CRE last refreshed these figures on 2026-11-05. Figures come from public federal statistics and are informational only, not investment advice. Check the source before relying on a number. Methodology: how we compute every number. More on every layer: data sources and licences.

Jobs outside North and South Carolina use County Business Patterns (paid private-sector employees in mid-March); wages and government jobs are not included.